The Arignar Anna Zoological Park, known colloquially as the Vandalur Zoo, holds the title of India’s largest zoological garden, encompassed within a sprawling 1300 acres. Initially established within a government-funded museum on Pantheon Road in Chennai's Eg district in 1855, the zoo later relocated to the quieter outskirts at Vandalura due to rising noise pollution and a growing collection of animals. Officially opened on July 24, 1985, by then-Tamil Nadu Chief Minister Dr. M.G. Ramachandran, this move cost approximately $75 million. The zoo’s affiliation with the Central Zoo Authority of India marks its importance in national wildlife conservation efforts.

Spanning an area that includes a rescue & rehabilitation space spread over 230 acres, Vandalur Zoo aims to thwart the extinction of numerous rare species at both national & international levels. Its vast collection boasts 2553 species of flora & fauna, including 1500 wild species and 46 endangered species vigilantly kept from extinction. Additionally, the zoo houses 47 mammal species, 63 bird species, five amphibian varieties, 25 fish types, & ten insect species making it one of India's largest wildlife sanctuaries.

On entering Vandalur Zoo, visitors are greeted by an ambiance reminiscent of a natural forest habitat. Animals and birds thrive here within free zones and moated enclosures designed to sustain a balanced ecological system underpinned by the principle of “Survival of the Fittest.”

The zoo features well-paved pathways allowing visitors to observe animals’ daily routines leisurely. It houses two aviaries - Sanctuary aviary and Walkthrough aviary - strategically positioned near lakes Hassan & Otteri to facilitate bird migration. Moreover, attractions like the Butterfly House, Reptile House (Serpentarium), Amphibian House, Crocodile enclosures, Primate house (including nocturnal species), Small Mammals house, Aquarium (Aquatic displays), Prey-predator exhibits (& notably Pre-historic Animal Park) add educational value while enhancing visitor engagement significantly. Additionally, facilities such as Zoo School and a Zoo Library open on Mondays & Fridays enrich visitor experiences.

Visitors can also embark on a fifteen-minute safari through densely vegetated areas where wild animals roam more freely—thanks primarily to its location within Vandalur Reserve Forest Area which mimics Western Ghats' natural habitat ensuring comfort for its animal residents. Elephant safaris have recently been introduced as an exciting new draw.

Vandalur's commitment extends towards ecological conservation with robust management systems for water and power; solar panels power animal enclosures ensuring optimal light and ventilation conditions despite Chennai’s high temperatures.

Named after respected Tamil political leader & former Chief Minister Arignarg Anna Durai — Vandalur Zoo is strategically located along the Chennai – Trichy National Highways at the junction with Thambaram – Kelambakkam Road—merely 15kms from Chennai International Airport & close proximity to Tambaram city center as well as Tambaram Air Force Station under surveillance by Vandalur Reserve Forest.

A visit to Vandalur is an invitation to escape everyday life and immerse in nature’s tranquility if only for one day!